Which of the following would most likely result in the greatest decrease in the rate of a chemical reaction ?

What amino acid is coded for by this sequence after the mutation

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.